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Jurnal Pendidikan Kimia (JPKim)

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Published by Universitas Negeri Medan

ISSN : 20853653 EISSN : 25493116 DOI : 10.24114

Core Subject : Science, Education, Social,

Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science

Jurnal Pendidikan Kimia (JPKim) yang dikelola Program Pascasarjana Universitas Negeri Medan terbit 3 kali setahun, yakni bulan April, Agustus dan Desember. JPKim menerbitkan artikel ilmiah hasil-hasil penelitian pendidikan kimia dan kimia fundamental. JPKim juga menerbitkan artikel Review terkait Pendidikan Kimia dan Kimia.

Arjuna Subject : -

Articles 267 Documents

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Development of higher order thinking skill (HOTS) assessment instrument for salt hydrolysis Alfi Rizkina Lubis; Ajat Sudrajat; Asep Wahyu Nugraha
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 1 (2022): April
Publisher : Pascasarjana Universitas Negeri Medan

This study aims to determine the results of the analysis of instrumentation requirements, the feasibility category of the Higher Order Thinking Skills an assessment instrument in terms of an expert validation. The research and the development model applied is 4-D (four-D) model. The trial design consisted of content validation tests by experts and analyzed by Aiken's formula. The assessment instrument obtained 37 items that are suitable for use, which means the assessment instrument has met the content validity by the expert judgment which has been analyzed using Aiken's V of 0.85, which means that all items are valid.Keywords:4D model, HOTS, Instrument, Rasch model, Salt hydrolysis

The development of sets-based chemic media on hydrocarbon material Meli Sartika Silaban; Selly Aprilia Nisa; Saronom Silaban; Julinton Sianturi
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 2 (2022): August
Publisher : Pascasarjana Universitas Negeri Medan

Learning media is a tool that is inseparable from the learning process in the world of education, especially in the current era of the media world which is increasingly utilizing media innovation. This research is a development research that aims to develop hydrocarbon chemical media. The development method used is ADDIE (Analysis, Design, Development, Implementation, Evaluation) which is modified by the researcher so that in this development research, only four stages are carried out, namely analysis, design, development and evaluation. The validation of the developed hydrocarbon chemical media was managed on a Likert scale of 1-4 by five expert validators, namely chemistry lecturers and teachers. The results of the analysis from the validation by expert validators on the feasibility of hydrocarbon chemical media according to the BSNP (National Education Standards Agency) modified with SETS eligibility are the content feasibility aspect of 3.58 (89.50 %); language feasibility aspect 3.68 (92.00%); presentation feasibility aspect 3.49 (87.25%); aspects of the feasibility of graphics 3.41 (85.25%); the feasibility aspect of implementing SETS 3.41 (85.25%). The average score of validation by the five validators is 3.54 with valid criteria and a presentation of 86.80% in a very feasible category. Based on the results of the validation of the hisrocarbon chemic media, it was concluded that the hydrocarbon chemical media was in accordance with the feasibility of the BSNP (National Education Standards Agency) modified with SETS eligibility and showed that the SETS-based hydrocarbon chemic media (chemistry comic) was very suitable to be used as a learning medium on hydrocarbon material.Keywords:ADDIE model, Chemistry comic, Hydrocarbons, SETS

Developing the i-spring media based on project based learning model on the alkane derivatives topic Ratu Evina Dibyantini; Aura Fitriani Harahap
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 2 (2022): August
Publisher : Pascasarjana Universitas Negeri Medan

This study aims to (1) obtain i-spring-based media teaching materials from Project Based Learning which meet the criteria for content eligibility, language eligibility, and presentation eligibility under the National Education Standards Agency (BSNP), and (2) know the increase in student learning outcomes after using i-spring-based media Project Based Learning. The type of research used is Research and Development (R&D), which has been modified as needed. This research was conducted on students of class XII IPA 4 at Senior High School in Indonesia in the academic year 2021/2022, separately purposive sampling. The results showed that: 1) The developed i-spring-media based on Project Based Learning on the material of alkane derivative compounds meets the BSNP criteria, with the result: material feasibility is 3.31 and media feasibility is 3.51. It means the criteria are valid and do not need to be revised; 2) The developed media can improve student learning outcomes with an N-gain of 0.52 medium category.Keywords:Alkane derivatives, I-spring media, Project based learning

An ab initio study of the reaction mechanism of 2-methylbenzaldehyde acetalization with methanol Muhammad Yusuf; Ahmad Kamil Nasution
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 2 (2022): August
Publisher : Pascasarjana Universitas Negeri Medan

Acetalization of 2-methylbenzaldehyde is a type of reaction that occur by reacting 2-methylbenzaldehyde with methanol. Meanwhile, the catalyst used in the reaction is an acid catalyst. This research was conducted to determine the pathway of the intermediate reaction mechanism that is most likely to produce 2-methylbenzaldehyde acetal product. The software used in this research is HyperChem 8.0, 6-31G* basis sets, with the ab initio method. Before being calculated, the molecular structure is drawn with a 2-dimensional view. After that, the molecular structure is converted into a 3D view and geometry optimization is carried out. The results obtained are in the form of optimized energy from the structure of reactant 2-methylbenzaldehyde, several intermediate products, and product 2-methylbenzaldehyde acetal.Keywords:Ab initio, Acetal, 2-methylbenzaldehyde, Reaction mechanism

Validity and effectiveness of chemical practicum e-modules of various applications with ethnoscience approach in chemical learning: Analysis review Jacky Anggara Nenohai; Sri Rahayu; I Wayan Dasna
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 2 (2022): August
Publisher : Pascasarjana Universitas Negeri Medan

This study intends to determine (1) the relevance of the practicum e module to the curriculum in chemistry learning; (2) the validity of the chemistry practicum e-module from various applications; and (3) the effectiveness of the application of the Ethnoscience-integrated chemistry practicum e-module in chemistry learning. This study uses the Systematic Literature Review (SLR) method using online article databases, namely ERIC and Google Scholar, which are limited to the last 5 years. The articles reviewed were 15 articles according to the topic. The results of the review show that the practicum e-module is in line with the curriculum in chemistry learning. Not to mention, practicum guides that go hand in hand with the times are very essential to be developed so that students can adapt well and learning becomes efficient with the current developing era. So, it is important to develop an electronic integrated practicum guide that creates balance between hard skills and soft skills in the curriculum concept. The validity of the chemistry practicum e-module from various applications in the implementation of online and offline practicum can be accepted by teachers and students, so that the teaching and learning process in proving theories in terms of practicum can be prepared. Especially in the future pandemic crisis, it is necessary to develop students' scientific literacy in terms of content, competence, context, and attitudes that are focused on preparing the next generation of scientific literacy through a culture-based curriculum to produce more contextual learning.Keywords: Ethnoscience approach, E-Module chemical practicum, Chemical learning

Isolation of secondary metabolite compounds of Coffee Benalu leaves (Loranthus parasiticus (L.) Merr.) and its antibacterial activity test Destria Roza; Nova Betria Sinaga; Christesya Ambarita
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 2 (2022): August
Publisher : Pascasarjana Universitas Negeri Medan

Coffee parasite leaves (Loranthus parasiticus (L.) Merr) is one of the plants that can be used as a medicinal material commonly obtained in various subtropical regions or tropical regions. This study aims to isolation of secondary metabolite compounds from methanol extract of coffee leaves and antibacterial activity by of disc diffusion and microdilution methods against S. aureus bacteria, S. mutans, and S. viridians. The result of antibacterial activity against S. aureus bacteria, S. mutans, and S. viridians respectively is 7.5 mm; 7.9 mm; and 8 mm which indicates that the ability to inhibit the growth of methanol extract bacteria 1% coffee leaves belongs to the medium category. The results of the microdilution method in determining the value of KHM against bacteria S. Aureus, S. Mutans, and S. Viridians are equal to the KHM value of 5000 μg/mL. Meanwhile, the MBC value for S. aureus was >5000 g/Ml, for S. mutans was >5000 g/mL and for S. viridians it was 5000 g/mL, indicating that the methanol extract of the coffee parasite leaves was only an inhibitor. Isolation of secondary metabolite compounds is carried out by fractionation using Liquid Vacuum Chromatography and Gravitational Column Chromatography which are further characterized using the GC-MS instrument. The results of the isolation of secondary metabolites from the methanol extract of the leaves of the coffee parasite (Loranthus parasiticus (L.) Merr.) showed that the leaves of the coffee parasite contained any 9 compounds.Keywords:Antibacterial, Diethyltoluamide, Isolation, Loranthus parasiticus (L.) Merr.

The influence of guided inquiry learning models on science process skills and student learning outcomes on chemical equilibrium material Anna Juniar; Indra Amparodman Sianipar
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 2 (2022): August
Publisher : Pascasarjana Universitas Negeri Medan

This study aims to determine the effect of the guided inquiry model on improving science process skills and learning outcomes of its correlation in chemistry. This research was conducted at SMA Negeri 1 Siantar Narumonda. The sample in this study consisted of two classes, each of which consisted of 30 students who were taught using guided and conventional inquiry learning models. The instruments used were multiple choice tests (Learning Outcomes), essay tests (Science Process Skills), student worksheets, and observation sheets on the implementation of science process skills. The results of the analysis obtained that the average gain of student learning outcomes who were taught using the guided inquiry learning model (0.789) was different from the conventional model (0.698) and the average gain of science process skills using the guided inquiry model (0.858) was different from the use of conventional learning models (0.789). Hypothesis testing using a two-party t-test for student learning outcomes and science process skills was obtained at 4.465 > 2.00172 and 7.051 > 2.0172. Thus, it was found that there was an influence of the guided inquiry learning model on student learning outcomes and science process skills. The correlation test showed that there was a correlation between learning outcomes and students' science process skills with an r count of 0.525 > 0.361 with a contribution of 27%.Keywords:Chemical equilibrium, Guided inquiry, Learning outcomes, Science process skills

Development of electronic activity sheet based preview, question, read, reflect, recite, review (pq4r) learning strategy on ion balance and pH of buffer solution R. Usman Rery; Erviyenni Erviyenni; Muhammad Agus Hardiyansyah
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 2 (2022): August
Publisher : Pascasarjana Universitas Negeri Medan

The development of a PQ4R-based electronic activity sheet on the material of ion balance and pH of the buffer solution aims to develop a valid electronic activity sheet and determine user responses in learning. The research method used is the research and development (R&D) method by applying a 4-D development model which includes Define, Design, Develop and Disseminate. Pandemic conditions cause research to only be carried out until the Develop stage which was followed by one-on-one trials, teacher trials, and limited trials. The data collection tools used were validity sheets and user response questionnaires. The data analysis technique used is to calculate the results of the validation percentage score and user response. The results of the study explain that the PQ4R-based electronic activity sheet developed has been categorized as "valid" according to 2 material validation experts and 2 media validation experts based on the feasibility of content, PQ4R characteristics, language, presentation, display, and software utilization with average scores are 100%, 96.42%, 97.5%, 87.5%, 99%, and 98.21%. One-on-one trials were carried out on 3 students with different abilities to get comments that were used as improvements to the electronic activity sheet. The results of the user response test for 3 teachers and 20 students were categorized as "very good" with scores of 92.59% and 84.87%, respectively.Keywords:Electronic activity sheet, pH of buffer solution, PQ4R, 4-D models, Validation

Development of module based introduction, connection, application, reflection, extention (icare) on ion balance and pH of salt solution class xi sma/ma R. Usman Rery; Sri Haryati; Intan Shanderi
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 2 (2022): August
Publisher : Pascasarjana Universitas Negeri Medan

The development of a ICARE-based Module on the material of ion balance and pH of salt solution aims to develop a valid module and determine user responses in learning. The research method used is the research and development (R&D) method by applying a 4-D development model which includes Define, Design, Develop and Disseminate, pandemic conditions cause research to only be carried out until the Develop stage which was followed by one-on-one trials, teacher trials, and limited trials. The data collection tools used are validity sheets and user response questionnaires. The data analysis technique used is to calculate the results of the validation percentage score and user response. The results of the study explain that the ICARE-module developed has been categorized as "valid" according to 3 material validators and based on the feasibility of content, ICARE characteristics, language, graphics and respectively were 93.93%, 100%, 95.2%, 95% and 100%. The results of the user response test for three teacher and 20 students were categorized as “very good”. The percentage of user response scored based teacher and student response questionnaires were 93.33% and 90.12% respectively.Keywords:Ion Equlibrum and pH of salt solution, ICARE model, Module, Validation

Improvement of student’s creative thinking skills by guided inquiry-based student worksheet in acid-base materials Nofi Eriana Sulistiani; Rudiana Agustini
Jurnal Pendidikan Kimia (JPKIM) Vol 14, No 3 (2022): December
Publisher : Pascasarjana Universitas Negeri Medan

This study aims to create students’ worksheets based on guided inquiry which are valid, practical and effective to gain students' skill in creative thinking in acid-base materials. This study was a Research & Development (R&D) using the 4-D method (Define, Design, Develop, Disseminate). The subjects implemented to this research were 29 students of class XI MIA MAN 4 Kediri. A design of one-group pretest-posttest without any comparison was used to conduct this research. Regarding the outcomes of the research, this can be summed up that 1). The validity of guided inquiry-based students’ worksheet obtained score of 89.60% with very valid criteria on content validation and 85.23% with very valid criteria in construct validation. 2). The practicality of guided inquiry-based students’ worksheet obtained values in the range of 70.96%-96.77% and on practical and very practical criteria. 3). The effectiveness of guided inquiry-based students’ worksheet obtained an increase in N-gain in four indicators of creative thinking skills of more than 0.7 with high criteria. It can be concluded that the students that used guided inquiry based worksheet enhanced student’s academic achievment in acid base materials.Keywords: Acid-base; Creative thinking skill; Guided inquiry; Student worksheet

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